The first number they both go into is 60. (Lowest Common Multiple = 60 = 12 X 5 &
15 X 4).
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They both go into 60. That is the LCM(Lowest Common Multiple) of 15 and 12.
15x4=60
12x5=60
3 Goes in to of 12 and 15 because 3 times 5 is 15 and 3 times 4 is 12!...So there u go...I hope I answered ir question!....Have a nice day! =)
No 7 can not go into 15
12 R 12
x - 12 = 3 Add '12' to both sides x = 3 + 12 x = 15
312÷15 = 20 remainder 12